CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment:
Utility Plant, at original cost	$ 4,427,438	$ 4,341,113
Accumulated Depreciation	(799,637)	(787,243)
Nonutility Property and Equipment, at cost	152,270	152,232
Accumulated Depreciation	(53,992)	(52,629)
Property, Plant and Equipment - Net	3,726,079	3,653,473
Investments:
Available-for-Sale Securities	41	41
Restricted Investments	7,649	1,649
Investment in Affiliates	79,243	76,122
Total Investments	86,933	77,812
Current Assets:
Cash and Cash Equivalents	10,360	30,030
Accounts Receivable	317,917	337,502
Unbilled Revenues	68,155	79,538
Provision for Uncollectibles	(20,753)	(18,842)
Notes Receivable - Affiliate	2,566	1,945
Natural Gas in Storage, average cost	26,613	60,425
Materials and Supplies, average cost	1,744	1,743
Prepaid Taxes	13,586	30,694
Derivatives - Energy Related Assets	29,180	54,021
Assets Held For Sale	37,532	59,588
Other Prepayments and Current Assets	33,807	26,548
Total Current Assets	520,707	663,192
Regulatory and Other Noncurrent Assets:
Regulatory Assets	624,187	662,969
Derivatives - Energy Related Assets	13,677	7,169
Notes Receivable - Affiliate	13,275	13,275
Contract Receivables	28,744	27,961
Goodwill	734,607	734,600
Other	115,153	116,119
Total Regulatory and Other Noncurrent Assets	1,529,643	1,562,100
Total Assets	5,863,362	5,956,577
Equity:
Common Stock	115,486	106,883
Other Paid-In Capital and Premium on Common Stock	1,023,097	843,268
Treasury Stock (at par)	(275)	(292)
Accumulated Other Comprehensive Loss	(26,087)	(26,095)
Retained Earnings	402,333	343,258
Total Equity	1,514,554	1,267,022
Long-Term Debt	2,117,903	2,106,863
Total Capitalization	3,632,457	3,373,885
Current Liabilities:
Notes Payable	355,121	270,500
Current Portion of Long-Term Debt	333,909	733,909
Accounts Payable	332,876	410,463
Customer Deposits and Credit Balances	26,434	32,058
Environmental Remediation Costs	50,258	47,592
Taxes Accrued	10,715	5,881
Derivatives - Energy Related Liabilities	21,392	24,134
Deferred Contract Revenues	1,772	1,772
Derivatives - Other Current	780	588
Dividends Payable	26,562	0
Interest Accrued	13,962	14,208
Pension Benefits	3,631	3,631
Other Current Liabilities	27,643	36,102
Total Current Liabilities	1,205,055	1,580,838
Deferred Credits and Other Noncurrent Liabilities:
Deferred Income Taxes - Net	111,614	85,836
Pension and Other Postretirement Benefits	110,049	110,112
Environmental Remediation Costs	204,645	206,058
Asset Retirement Obligations	81,032	80,163
Derivatives - Energy Related Liabilities	5,713	7,256
Derivatives - Other Noncurrent	8,898	7,285
Regulatory Liabilities	478,592	478,499
Other	25,307	26,645
Total Deferred Credits and Other Noncurrent Liabilities	1,025,850	1,001,854
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	5,863,362	5,956,577
SJG Utility Operations
Property, Plant and Equipment:
Utility Plant, at original cost	2,958,656	2,907,202
Accumulated Depreciation	(535,551)	(523,743)
Property, Plant and Equipment - Net	2,423,105	2,383,459
Investments:
Restricted Investments	1,468	1,278
Total Investments	1,468	1,278
Current Assets:
Cash and Cash Equivalents	1,756	1,984
Accounts Receivable	146,185	101,572
Accounts Receivable - Related Parties	16,338	2,442
Unbilled Revenues	38,292	43,271
Provision for Uncollectibles	(13,968)	(13,643)
Natural Gas in Storage, average cost	3,504	16,336
Materials and Supplies, average cost	619	619
Prepaid Taxes	11,113	28,772
Derivatives - Energy Related Assets	2,076	5,464
Other Prepayments and Current Assets	18,888	11,280
Total Current Assets	224,803	198,097
Regulatory and Other Noncurrent Assets:
Regulatory Assets	454,542	492,365
Long-Term Receivables	26,428	25,531
Derivatives - Energy Related Assets	0	15
Other	20,047	17,491
Total Regulatory and Other Noncurrent Assets	501,017	535,402
Total Assets	3,150,393	3,118,236
Equity:
Common Stock	5,848	5,848
Other Paid-In Capital and Premium on Common Stock	355,744	355,744
Accumulated Other Comprehensive Loss	(22,349)	(22,357)
Retained Earnings	737,518	668,787
Total Equity	1,076,761	1,008,022
Long-Term Debt	884,655	874,507
Total Capitalization	1,961,416	1,882,529
Current Liabilities:
Notes Payable	68,502	107,500
Current Portion of Long-Term Debt	18,909	18,909
Customer Deposits and Credit Balances	18,018	23,862
Accounts Payable - Commodity	41,155	48,490
Accounts Payable - Other	44,701	52,966
Accounts Payable - Related Parties	6,058	12,563
Environmental Remediation Costs	36,338	33,022
Taxes Accrued	7,012	1,891
Derivatives - Energy Related Liabilities	693	2,146
Derivatives - Other Current	391	343
Interest Accrued	4,842	7,134
Pension Benefits	3,597	3,597
Other Current Liabilities	7,759	9,444
Total Current Liabilities	257,975	321,867
Deferred Credits and Other Noncurrent Liabilities:
Deferred Income Taxes - Net	349,676	325,886
Pension and Other Postretirement Benefits	96,497	96,053
Environmental Remediation Costs	113,703	115,049
Asset Retirement Obligations	80,756	79,890
Derivatives - Energy Related Liabilities	96	43
Derivatives - Other Noncurrent	6,191	5,524
Regulatory Liabilities	278,827	286,539
Other	5,256	4,856
Total Deferred Credits and Other Noncurrent Liabilities	931,002	913,840
Total Capitalization and Liabilities	$ 3,150,393	$ 3,118,236